Tuning of the HOMO–LUMO gap of donor-substituted symmetrical and unsymmetrical benzothiadiazoles
作者:Rajneesh Misra、Prabhat Gautam
DOI:10.1039/c4ob00629a
日期:——
electrochemical reduction show multiple reduction waves. The optical HOMO–LUMOgap of BTDs 5–12 was found to be a function of the number and nature of the acceptors. Computational studies reveal that strong cyano-based acceptors, dicyanoquinodimethane (DCNQ) and tetracyanobutadiene (TCBD) lower the LUMO level in BTDs 7–12, which results in a low HOMO–LUMOgap compared to acetylene linked BTDs 5 and 6. The BTDs with